Code generator - single table query crud - generator

(1) Introduce dependencies

<dependency>
    <groupId>org.mybatis.generator</groupId>
    <artifactId>mybatis-generator-core</artifactId>
    <version>1.4.0</version>
</dependency>

(2)generator You have to configure the file — It must be placed under the project

（3）generato.xml

<?xml version="1.0" encoding="UTF-8"?>

<context id="DB2Tables" targetRuntime="MyBatis3">
    <!-- Generation of comments -->
    <commentGenerator>
        <property name="suppressAllComments" value="true" />
    </commentGenerator>
    <!-- Database connection information -->
    <jdbcConnection driverClass="com.mysql.cj.jdbc.Driver"
                    connectionURL="jdbc:mysql://localhost:3306/mybatis?serverTimezone=Asia/Shanghai"
                    userId="root"
                    password="123456">
    </jdbcConnection>

    <javaTypeResolver >
        <property name="forceBigDecimals" value="false" />
    </javaTypeResolver>

    <!-- The package where the generated entity class is located -->
    <javaModelGenerator targetPackage="com.ccr.entity" targetProject="./src/main/java">
        <property name="enableSubPackages" value="true" />
        <property name="trimStrings" value="true" />
    </javaModelGenerator>

    <!-- The mapping file exists in the directory -->
    <sqlMapGenerator targetPackage="mapper"  targetProject="./src/main/resources">
        <property name="enableSubPackages" value="true" />
    </sqlMapGenerator>

    <!--dao The package where the interface is located -->
    <javaClientGenerator type="XMLMAPPER" targetPackage="com.ccr.dao"  targetProject="./src/main/java">
        <property name="enableSubPackages" value="true" />
    </javaClientGenerator>
    <!-- surface 
          schema： The database where the table is located 
          tableName: Table name 
          domainObjectName: Name of entity class 
    -->
    <table schema="mybatis" tableName="tbl_emp" domainObjectName="Emp"
           enableDeleteByExample="false"
           enableSelectByExample="false"
           enableUpdateByExample="false"
           enableCountByExample="false"/>

    <table schema="mybatis" tableName="tbl_dept" domainObjectName="Dept"
           enableDeleteByExample="false"
           enableSelectByExample="false"
           enableUpdateByExample="false"
           enableCountByExample="false"/>
</context>

(4) Test code

public void Test01() throws Exception{
List warnings = new ArrayList();
boolean overwrite = true;
File configFile = new File(“geberator.xml”);
ConfigurationParser cp = new ConfigurationParser(warnings);
Configuration config = cp.parseConfiguration(configFile);
DefaultShellCallback callback = new DefaultShellCallback(overwrite);
MyBatisGenerator myBatisGenerator = new MyBatisGenerator(config, callback, warnings);
myBatisGenerator.generate(null);
}